- #36
willem2
- 2,127
- 391
Janus said:I was merely pointing out that if galactic rotation effected stellar system rotation, that you would not see any difference between the two sides of the galactic equator. That "if" in my mind is very unlikely. For one, we know that for instance, the rotation of the Earth effects on systems is too weak to effect something even a meter across. A stellar system is many times smaller than that compared to the galaxy. Not only that, but the Earth rotates in one day, compared to the 250 million years it takes for the solar system to make one trip around the galaxy.
Actuallly star systems aren't much smaller compared to the size of the galaxy than 1 meter compared to the size of the earth, about 10^(-7).
They are however formed by contraction of gas clouds that can start out much larger, and can also take millions of years to collapse, so I'm not sure the influence of the galactic rotation is completely unimportant.